Doug Anson / C027

Board support library for C027 - updated with thread-safe wait()

Fork of C027 by u-blox

C027.cpp@13:fb30e9923a7b, 2013-11-19 (annotated)

Committer:
mazgch
Date:
Tue Nov 19 12:26:01 2013 +0000
Revision:
13:fb30e9923a7b
Parent:
12:31fb5ff9fef5
Child:
14:e30f90b5447e
added ilevoe (i2c buffer oe)

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mazgch 2:b7bd3660ff64 1 /* Platform source file, for the u-blox C27-C20/U20/G35
mazgch 2:b7bd3660ff64 2 * mbed Internet of Things Starter Kit
mazgch 2:b7bd3660ff64 3 * http://mbed.org/platforms/u-blox-C027/
mazgch 2:b7bd3660ff64 4 *
mazgch 2:b7bd3660ff64 5 */
mazgch 2:b7bd3660ff64 6
mazgch 2:b7bd3660ff64 7 #include "C027.h"
mazgch 2:b7bd3660ff64 8
mazgch 2:b7bd3660ff64 9 void mbed_die(void)
mazgch 2:b7bd3660ff64 10 {
mazgch 8:a356376db984 11 DigitalOut led(LED);
mazgch 11:722101675ce4 12 led = 0;
mazgch 11:722101675ce4 13 // Send SOS in Morse Code: // "... --- ... "
mazgch 11:722101675ce4 14 const char sos[] = "=.=.=...===.===.===...=.=.=......";
mazgch 11:722101675ce4 15 const int dot = 100; // length of the dot in milliseconds (typical: 50-100 ms)
mazgch 11:722101675ce4 16 // lengths of symbols:
mazgch 11:722101675ce4 17 // di = dot
mazgch 11:722101675ce4 18 // dah = 3 dot
mazgch 11:722101675ce4 19 // char space = 3 dot
mazgch 11:722101675ce4 20 // word space = 6 dot
mazgch 11:722101675ce4 21 for (int i = 0; /* nothing */; i = sos[i+1] ? i+1 : 0)
mazgch 2:b7bd3660ff64 22 {
mazgch 11:722101675ce4 23 led = (sos[i] == '=');
mazgch 11:722101675ce4 24 wait_ms(dot);
mazgch 2:b7bd3660ff64 25 }
mazgch 2:b7bd3660ff64 26 }
mazgch 2:b7bd3660ff64 27
mazgch 6:e11bf54dd344 28 C027::C027() :
mazgch 13:fb30e9923a7b 29 mdmEn(MDMEN), mdmRst(MDMRST), mdmPwrOn(MDMPWRON), // MDM CTRL
mazgch 13:fb30e9923a7b 30 mdmLvlOe(MDMLVLOE), mdmILvlOe(MDMILVLOE), mdmUsbDet(MDMUSBDET), // MDM IF
mazgch 13:fb30e9923a7b 31 gpsEn(GPSEN), gpsRst(GPSRST) // GPS CTRL
mazgch 6:e11bf54dd344 32 {
mazgch 13:fb30e9923a7b 33 DigitalOut mdmRts(MDMRTS);
mazgch 13:fb30e9923a7b 34 mdmRts = 0; // RTS. 0=ready to send
mazgch 7:e3eab86f1de9 35 // we start with the gps disabled
mazgch 8:a356376db984 36 gpsEn = 0; // LDOEN: 1=on,0=off
mazgch 8:a356376db984 37 gpsRst = 0; // RESET: 0=reset,1=operating
mazgch 6:e11bf54dd344 38 gpsIsEnabled = false;
mazgch 7:e3eab86f1de9 39 // we start with the modem disabled
mazgch 13:fb30e9923a7b 40 mdmLvlOe = 1; // LVLEN: 1=disabled (uart/gpio)
mazgch 13:fb30e9923a7b 41 mdmILvlOe = 0; // ILVLEN: 0=disabled (i2c)
mazgch 8:a356376db984 42 mdmUsbDet = 0; // USBDET: 0=disabled
mazgch 8:a356376db984 43 mdmPwrOn = 1; // PWRON: 1=idle, 0=action
mazgch 8:a356376db984 44 mdmEn = 0; // LDOEN: 1=on, 0=off
mazgch 8:a356376db984 45 mdmRst = 0; // RESET: 0=reset, 1=operating
mazgch 6:e11bf54dd344 46 mdmIsEnabled = false;
mazgch 6:e11bf54dd344 47 }
mazgch 6:e11bf54dd344 48
mazgch 6:e11bf54dd344 49 void C027::mdmPower(bool enable)
mazgch 6:e11bf54dd344 50 {
mazgch 7:e3eab86f1de9 51 if (!mdmIsEnabled && enable) // enable modem
mazgch 6:e11bf54dd344 52 {
mazgch 7:e3eab86f1de9 53 #ifdef C027_REVA
mazgch 7:e3eab86f1de9 54 // we need the gps ldo for the level shifters of the modem
mazgch 8:a356376db984 55 gpsEn = 1; // LDOEN(gps): 0=off -> 1=on
mazgch 7:e3eab86f1de9 56 #endif
mazgch 8:a356376db984 57 mdmPwrOn = 1; // PWRON: 1=idle
mazgch 8:a356376db984 58 mdmEn = 0; // LDOEN: 0=off
mazgch 8:a356376db984 59 mdmRst = 0; // RESET: 0=reset
mazgch 8:a356376db984 60 mdmLvlOe = 1; // LVLEN: 1=disabled
mazgch 13:fb30e9923a7b 61 mdmILvlOe = 0; // ILVLEN: 0=disabled
mazgch 8:a356376db984 62 mdmUsbDet = 0; // USBDET: 0=disabled
mazgch 8:a356376db984 63 wait_ms( 10); // wait until supply switched off
mazgch 8:a356376db984 64 mdmEn = 1; // LDOEN: 0=off -> 1=on
mazgch 8:a356376db984 65 wait_ms( 10); // wait until supply stable and on
mazgch 8:a356376db984 66 wait_ms(300); // power on sequence is triggered by keeping reset 50ms-300ms low
mazgch 8:a356376db984 67 mdmRst = 1; // RESET: 0=reset -> 1=operating
mazgch 8:a356376db984 68 mdmUsbDet = 1; // USBDET: 1=enabled
mazgch 7:e3eab86f1de9 69 mdmIsEnabled = true;
mazgch 10:bc9e2eb5daa8 70 // the interfaces of the modem should be fully ready after a certain period
mazgch 10:bc9e2eb5daa8 71 // LISA-U200 5000ms
mazgch 10:bc9e2eb5daa8 72 // SARA-G350 3000ms
mazgch 10:bc9e2eb5daa8 73 // LISA-C200
mazgch 10:bc9e2eb5daa8 74 wait_ms(1000);
mazgch 13:fb30e9923a7b 75 mdmLvlOe = 0; // LVLEN: 0=enabled (uart/gpio)
mazgch 13:fb30e9923a7b 76 if (gpsIsEnabled)
mazgch 13:fb30e9923a7b 77 mdmILvlOe = 1; // ILVLEN: 1=enabled (i2c)
mazgch 7:e3eab86f1de9 78 }
mazgch 7:e3eab86f1de9 79 else if (mdmIsEnabled && !enable) // disable modem
mazgch 7:e3eab86f1de9 80 {
mazgch 7:e3eab86f1de9 81 mdmIsEnabled = false;
mazgch 7:e3eab86f1de9 82 // initiate power off sequence by setting PwnOn low for >1s
mazgch 13:fb30e9923a7b 83 mdmILvlOe = 0; // ILVLEN: 0=disabled (i2c)
mazgch 13:fb30e9923a7b 84 mdmLvlOe = 1; // LVLEN: 1=disabled (uart/gpio)
mazgch 8:a356376db984 85 mdmUsbDet = 0; // USBDET: 0=disabled
mazgch 8:a356376db984 86 mdmPwrOn = 0; // PWRON: 0=active
mazgch 8:a356376db984 87 wait_ms(1000); // send to sleep
mazgch 8:a356376db984 88 mdmPwrOn = 1; // PWRON: 0=active -> 1=idle
mazgch 7:e3eab86f1de9 89 // now we can savely switch off the ldo
mazgch 8:a356376db984 90 mdmRst = 0; // RESET: 1=operating -> 0=reset
mazgch 8:a356376db984 91 mdmEn = 0; // LDOEN: 1=on -> 0=off
mazgch 7:e3eab86f1de9 92 #ifdef C027_REVA
mazgch 7:e3eab86f1de9 93 // the gps ldo may no longer be needed level shifters of the modem
mazgch 7:e3eab86f1de9 94 // so we switch it off if the gps is not enabled
mazgch 7:e3eab86f1de9 95 if (!gpsIsEnabled)
mazgch 7:e3eab86f1de9 96 gpsEn = 0; // LDOEN(gps): 1=on -> 0=off
mazgch 7:e3eab86f1de9 97 #endif
mazgch 6:e11bf54dd344 98 }
mazgch 13:fb30e9923a7b 99
mazgch 6:e11bf54dd344 100 }
mazgch 6:e11bf54dd344 101
mazgch 6:e11bf54dd344 102 void C027::mdmReset(void)
mazgch 6:e11bf54dd344 103 {
mazgch 8:a356376db984 104 if (mdmIsEnabled)
mazgch 8:a356376db984 105 {
mazgch 8:a356376db984 106 mdmRst = 0; // RESET: 0=reset
mazgch 8:a356376db984 107 // power on sequence is triggered by reset low
mazgch 8:a356376db984 108 // LISA-U200 50ms
mazgch 8:a356376db984 109 // SARA-G350 50ms
mazgch 8:a356376db984 110 // LISA-C200 300ms
mazgch 8:a356376db984 111 wait_ms(300);
mazgch 8:a356376db984 112 mdmRst = 1; // RESET: 0=reset -> 1=operating
mazgch 8:a356376db984 113 }
mazgch 8:a356376db984 114 }
mazgch 8:a356376db984 115
mazgch 8:a356376db984 116 void C027::mdmWakeup(void)
mazgch 8:a356376db984 117 {
mazgch 6:e11bf54dd344 118 if (mdmIsEnabled)
mazgch 6:e11bf54dd344 119 {
mazgch 8:a356376db984 120 mdmPwrOn = 0;
mazgch 8:a356376db984 121 // wakeup the device by low pulse:
mazgch 8:a356376db984 122 // LISA-U200 50-80us
mazgch 8:a356376db984 123 // SARA-G350 5ms
mazgch 8:a356376db984 124 // LISA-C200 150ms
mazgch 8:a356376db984 125 wait_ms(150);
mazgch 8:a356376db984 126 mdmPwrOn = 1;
mazgch 6:e11bf54dd344 127 }
mazgch 8:a356376db984 128 }
mazgch 8:a356376db984 129
mazgch 8:a356376db984 130 void C027::mdmSleep(void)
mazgch 8:a356376db984 131 {
mazgch 8:a356376db984 132 if (mdmIsEnabled)
mazgch 8:a356376db984 133 {
mazgch 8:a356376db984 134 mdmPwrOn = 0;
mazgch 8:a356376db984 135 // going to sleep is triggerd by low pulse:
mazgch 8:a356376db984 136 // LISA-U200 1000ms
mazgch 8:a356376db984 137 // SARA-G350 n/a
mazgch 8:a356376db984 138 // LISA-C200 n/a
mazgch 8:a356376db984 139 wait_ms(1000);
mazgch 8:a356376db984 140 mdmPwrOn = 1;
mazgch 8:a356376db984 141 }
mazgch 7:e3eab86f1de9 142 }
mazgch 7:e3eab86f1de9 143
mazgch 7:e3eab86f1de9 144 void C027::gpsPower(bool enable)
mazgch 7:e3eab86f1de9 145 {
mazgch 7:e3eab86f1de9 146 if (!gpsIsEnabled && enable) // enable gps
mazgch 7:e3eab86f1de9 147 {
mazgch 7:e3eab86f1de9 148 gpsRst = 0; // RESET: 0=reset
mazgch 7:e3eab86f1de9 149 gpsEn = 1; // LDOEN: 0=off -> 1=on
mazgch 7:e3eab86f1de9 150 wait_ms(1); // wait until stable
mazgch 7:e3eab86f1de9 151 gpsRst = 1; // RESET: 0=reset -> 1=operating
mazgch 7:e3eab86f1de9 152 gpsIsEnabled = true;
mazgch 7:e3eab86f1de9 153 // the gps schould be fully ready after 50ms
mazgch 13:fb30e9923a7b 154 if (mdmIsEnabled)
mazgch 13:fb30e9923a7b 155 mdmILvlOe = 1; // ILVLEN: 0=enabled (i2c)
mazgch 7:e3eab86f1de9 156 }
mazgch 7:e3eab86f1de9 157 else if (gpsIsEnabled && !enable) // diasble gps
mazgch 7:e3eab86f1de9 158 {
mazgch 7:e3eab86f1de9 159 gpsIsEnabled = false;
mazgch 13:fb30e9923a7b 160 mdmILvlOe = 0; // ILVLEN: 0=disabled (i2c)
mazgch 13:fb30e9923a7b 161 gpsRst = 0; // RESET: 1=operating -> 0=reset
mazgch 7:e3eab86f1de9 162 #ifdef C027_REVA
mazgch 7:e3eab86f1de9 163 // the gps ldo may have to remain enabled for the level shifters of the modem
mazgch 7:e3eab86f1de9 164 if (!mdmIsEnabled)
mazgch 13:fb30e9923a7b 165 gpsEn = 0; // LDOEN: 1=on -> 0=off
mazgch 7:e3eab86f1de9 166 #else
mazgch 13:fb30e9923a7b 167 gpsEn = 0; // LDOEN: 1=on -> 0=off
mazgch 7:e3eab86f1de9 168 #endif
mazgch 7:e3eab86f1de9 169 }
mazgch 6:e11bf54dd344 170 }
mazgch 6:e11bf54dd344 171
mazgch 6:e11bf54dd344 172 void C027::gpsReset(void)
mazgch 6:e11bf54dd344 173 {
mazgch 6:e11bf54dd344 174 if (gpsIsEnabled)
mazgch 6:e11bf54dd344 175 {
mazgch 6:e11bf54dd344 176 gpsRst = 0; // RESET: 0=reset,1=operating
mazgch 6:e11bf54dd344 177 wait_ms(1);
mazgch 6:e11bf54dd344 178 gpsRst = 1; // RESET: 1=operating,0=reset
mazgch 6:e11bf54dd344 179 }
mazgch 6:e11bf54dd344 180 }